JPS5947548A - V-velt - Google Patents

Abstract

PURPOSE:To make it possible to smoothly transmit a large power, by arranging a plurality of metal members in a predetermined shape for surrounding a V- endless belt member with being adjacent together, along the entire periphery in the longitudinal direction of the endless belt. CONSTITUTION:Corrugation is formed in the inner peripheral surface 12 in the longitudinal direction of a flexible endless V-belt member 11 which is used in a stepless speed change unit and which has a trapezoidal cross-sectioned shape having a bi-lateral inclined angle of theta. Thin metal members 20, 25 of the same shape as the cross-sectioned shape of the V-belt member 11 are wrapped around the latter so that the outer periphery of the member 11 in the cross-sectional direction are surrounded with respect to crest parts 13 and trough parts 14 in the inner peripheral surface of the V-belt member 11. These members 20, 25 are formed with convex sections 22, 27 having a curvature of (r) in one of their both inclined lateral surfaces 21, 26, and as well are formed with concave sections 23, 28 having the same curvature (r) in the other of the inclined lateral surfaces 21, 26, these convex and concave sections being fitted together.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an 11□11 force transmitting V-belt having a square cross section.

V-belts used in stepless variable 4-bars, etc., are suitable for transmitting large amounts of power because they can obtain greater frictional force than ordinary flat belts. Tension is applied.

In order to withstand such large tension,
Conventionally, as shown in FIG.
2 to +1) direction for a predetermined 114 months (many 44j for each hanging)
There was a V-belt that killed it.

In such a rubber V-belt, ■The tension applied to the belt can be carried by the end lobe tension member 02, but the tension applied to both V-shaped sides of the belt from the pulley both slopes' (: fl) When the belt receives large lateral pressure, its cross-sectional shape deforms and generates heat.To solve this problem, an endless thin metal belt is applied to the IJ knob along its longitudinal direction. There was one that had a large number of blocks, but it had some drawbacks, such as being heavy, having poor high-speed transmission performance, and being expensive.

The present invention relates to an improvement in pertonation that overcomes these drawbacks, and its purpose is to provide a V-belt that has a large transmission capacity and is low in cost. be.

An embodiment of the present invention illustrated in FIGS. 2 to 6 will be described below.

1.0 is a continuously variable transmission for motorcycles (driver 11 in address 1)
f1. ■Groove 3 of iV pulley 2 and driven ■V of pulley 4
The V-belt of this embodiment spans the groove 5 (the same V-belt)
10 is a rubber town flexible end V belt part month month and the same endless V
Thin metal members 20, 25 formed to surround the outer periphery of the cross section of the belt member H, and a thin metal member 20 adjacent to the outermost peripheral surface 15 of the flexible endless V-belt member 1. 2
It consists of an endless thin metal strip 30 that is fitted onto the outer circumferential surface of 5 @ 24.29. -The cross-sectional shape of the flexible endless V-belt member 11 is formed in a ladder shape with an inclination angle of θ on both sides. It is formed into a shape.

Also, the town's '1' is a sex tick! j ■Perdopa l:a
Close to the outer circumferential surface 13 inside the columbar 7Ifi of Z'11,
■% of 9 strips oriented in the longitudinal direction of the belt river [11, ■Lobe tensile member J7/buried at regular intervals in the direction of bar 11-J) 1. I'm here.

Furthermore, the flexible state Q1 (u V belt part) 17J11
The inner circumferential surface peak portion 13 and the inner circumferential surface valley? 'rlS]/I and ノ1 respectively. 11! (L thin metal having the same cross-sectional shape as the end V-belt part 4'/l'11) Part 2 (, 1-, 25 is wound around the same thin metal part I) 20.5 surface inclined side curved part 21 % 2 [i is drive Oυ.

■Pulley 20V 7p4' 3 and slave force ■Pulley 4's groove 5VC should be in close contact with each other.

Furthermore, both inclinations f:'l of the thin metal part size 20.25
(il1 surface MIS 2], 26 has a convex MIS 2+ with a curvature of -10,000 r), 27 is formed, and the other has a concave portion 2 with a curvature of r (which may be larger than 21.): 3.28 is torn, and the uneven part 22.2
3.27.28 are arranged in the order of 22.2:)), 27, and can be fitted into each other.

Moreover, the outer circumferential surface portion 24.2 of the thin metal members 20, 25 that is in contact with the outermost circumferential surface I5 of the PSSi20! One endless thin metal strip 30 (multiple strips may also be used, in this case a large number of strips overlapped in the thickness direction) 30 is fitted to the +.

The V-belt 10 of the embodiment shown in FIGS. 2 to 6 has the structure as described above, so that the driving force JV belt 7, -ri-2 and slave I! (V-belt that spans the IIv pulley 4 and the first V-belt) On the tension side 18 of 0,
The tension acting on the V-belt 10 is borne by the endless lobe tensile member 17 and the thin metal strip 30, and the tension on the compression side 19 of the V-belt 10 is borne by the endless lobe tensile member 17 and the thin metal strip 30.
The compressive force acting on the inclined side surface 2 of the W metal part 20.2.5
1, 26. Therefore! 11. Force transmission is performed smoothly.

Also, since the lateral pressure, which is the contact pressure between the groove 3.5 of the pulley 2.4 and the V-belt 10, is borne by the thin metal part Δ20\δ, the limit value of the lateral pressure increases, making it possible to transmit a large amount of power. Become.

In the glare, the V-belt 10 contacts the V-pulley 2.4 and changes from a straight line to a curved state. In case,
The thin metal part 'vJ' 20.25 can freely rotate in phase with its circular TLIL-shaped convex part 22.27 and circular arc-shaped concave part 23.28, and also has a flexible endless V-bell I part. Kidnapping J
1 is j! ! l: Because the end loaf tensile member 17 prevents stretching and deformation, hysteresis loss is small, power transmission efficiency is high, and durability is excellent.0 Furthermore, flexible force IQ with small specific gravity y17j V
Belt member] 1, thin metal part height 20.25 and no yj ■ Thin metal strip knob 30 constitutes a V-belt 10], because, ■ Bell) 10 fj < ffl is small, high speed Excellent transmission performance and low cost.

In the 'z Hra examples illustrated in Figures 2 to 6,
As shown in FIG. 7 and FIG.
A metal rod 3J may be embedded in the flexible endless comb layer 16 of i%IΔJ1 so that the belts collide with each other. Zara (/7c) You can get more people.

MaW2F 91 sentence 1 to month 1 figure 1 closed as shown,
Flexible condition for use::5 Without embedding the endless lobe resistor 17 in the rubber layer I6 of the V-belt section row 11, the thin metal section 2 ()
, 25 slope + 1Ill The upper f1□1 of the blood parts 21, 26 may be protruded upward to form an endless thin metal protrusion 2J a, 26 a to prevent the IJ knob from falling off. , 7F71'A to the actual Mt shown in FIG.

Example and Approximately 1 "It has 11 effects.

In the illustrated example of real JFIIx, VJ sexual behavior V belt ↑
The inner circumferential surface 12 of the 11ζ control was wave-shaped, but
The outermost 191 and 15 and the flat Tj' -+2 surface and the same inner peripheral surface】2
In such embodiments, only one type of thin metal member 20125 is required.

In the dud ITi, the previous year! [There is a gap between the driving V pulley and the driven pulley 9, between both pulleys.
'CQJI + power transmission': 3 ''4- le' Hell)
Legend LILII V4 Iij VCf6 Ite, 14 Flexibility (!!! End ■ A large number of metal members surrounding the parfocal ff11.l V-belt member are arranged at predetermined intervals over the entire circumference in the longitudinal direction of the belt. The adjacent metal part has a V-shaped slanted side surface, and one side of the metal part is in contact with the other, so that the metal parts are in contact with each other. Note + ii (The metal part that touches 1- is relatively self-1 in the uneven part
[Rotate to ■Pulley's V-swamp to V-be/l, ) OJ
) V-shape What 1 diagonal A 1l11il'lJ < l! Jl
1 pressure is 1771 because it is borne by the metal part 1;
The limit of the lateral pressure is increased, and the large power transmission becomes 1-1J.

Furthermore, in the present invention, the metal part 4A can be formed thinner, which reduces weight and improves transmission efficiency. i: Savings 1- can be achieved.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional perspective view of a conventional V-belt, and Figure 21 is an example of an inventive V-belt. ．． lI example is motorcycle i1f
Figure 3 is an enlarged side view of the i-branch, and Figures 4 and 5 are 1\'- of Figure 3.
A cross-sectional view cut along the IV line and the V-V line, and Figure 6 is a longitudinal cross-sectional view cut along the Vl-Vl line of the 4th figure.
Fig. 7 is a longitudinal cross-sectional NFLJ blood diagram of another example, Fig. 8 (
Figure 9 is an enlarged side view of the main part of another embodiment (1 = 4). Figures 10 and 11 are It is a cross-sectional view cut along the X-X line and the XI-XI line in FIG.
iilJ Vboo υ−13”'■'l't/j z
4-Sub 1lEIIV pulley, 5, y groove, 10
...V belt, Jl...h ■Flexibility ■Belt part Io, J2...Inner circumferential surface, J3...Inner circumferential surface peak, 14.
...Inner circumference surface valley, j5...outermost circumference ffi! s16...
・Rubber layer, 17... Endless lobe tensile body, 18..."
Hel) Tension side, 19...■ Belt compression side, 20.
... Thin metal Ml (type, 21... Inclined tuft surface part, 2
2...Convex portion, 2;...Concave portion\24...Outer peripheral surface W
IJ Tsubu, 31...metal rod. Agent: Patent attorney Nozomi Ehara, 1 person, -2≦)5

Claims (1)

[Claims] 11 drive 0υ V pulley and driven ■Boo II A large number of metal parts sA surrounding the same endless belt part 4Δ are arranged at predetermined distances over the entire circumference in the direction, and the metal parts sA having the same endless belt part 4A are covered with the azo crystals described on page 11. 1. A V-belt characterized in that a convex portion with a predetermined curvature is formed on one side of the ``■-shaped inclined surface'' of the belt part, and four portions with a predetermined curvature are formed on the other side, and the two are brought into contact with each other. Place the two ends of the metal rod 4A in the 11 direction on both sides of the same endless V-belt 4A;
The fact that the inner surface of the V-shaped side of the metal part of the ql-ru is supported by the support of the V-shaped side is qJt and 51 for the 1-ru i.
11'', Shiba 1: Wfi required range V-belt described in item 1. ゛3 M+J characterized by having a M+J lug fitted on the outermost circumference of the V-belt. The V-belt according to claim σ) range or claim 1 or 2.